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Thursday, June 14, 2012

Aircraft Tu-204

Tu-204 - Russian medium-range passenger aircraft developed
in the late 1980s - early 1990s to replace the Tupolev passenger aircraft to
airlines Tu-154. The first flight occurred January 2, 1989, in operation since
1994. Produced since 1990 at "Aviastar-SP" in Ulyanovsk, as well as
1996 and on behalf of the CAPO SP Gorbunov Kazan (modification of the Tu-214).
Total for January 2012 released about 70 aircraft, of which 50 are operated,
the rest are in storage (including 4 car that once belonged to the bankrupt
airline in 2008, "Dalavia"). One car had an accident in March 2010
while landing at Domodedovo.Since the production of aircraft began after the
"Cold War" NATO codification of the Tu-204 is missing.Their foreign
counterparts - Boeing-757 and Airbus A321.By 2015 it was planned to remove the
aircraft Tu-204 with the production, replacing them with MC-21 aircraft.
However, there is likely to continue production of these planes, and after
2015, and in particular the Ministry of Industry and in 2010 announced his
plans for the supply of airline Red Wings in 2016 to 44 Tu-204SM.
Completion of certification and the start of serial production of Tu-204SM is
scheduled for summer 2012.

History of creation

The choice of concept

Tu-204 at Le Bourget
(1991)The development of medium-range passenger aircraft Tu-204 began in the
Tupolev Design Bureau in 1973. While working on the new aircraft was considered
a variety of schemes and layouts. In parallel to KB was drafting Tu-164,
Tu-174, Tu-184, Tu-194. Further development of the exploratory research was to
develop the concept of development of the main planes through the creation of
2.3 with a further base types derived from them by modifying all the necessary
scale. One of these was the basic aircraft Tu-204. Work on its design was
headed by Chief Designer Leonid Leonidovich Selyakov. Originally supposed to
establish it two engines NK-8-2U. The design assumed greater continuity with
the serial Tu-134 and Tu-154. Many designs were taken from the Tu-134D projects
and Tu-136, whose development was carried out at this time in size.By the
mid-1970s, the Tu-204 project is transformed into the "Airbus",
similar in layout decisions to the American DC-10 aircraft. Its different from
the fuselage length of 48 m, a wing of moderate sweepback (28 °) with a
powerful mechanization along the trailing edge. As a power plant engines were
considered the D-30A, D-30KU, promising turbofan and TVVD [1]. The family had
to enter short-haul Tu-204-100-204 and Tu-150 medium-range Tu-204-200 and
Tu-204-250. Later, in 1977-1978., Addressed two main areas: the twin-engine
Tu-204-200 and Tu-204 trimotored-300.

Development

Tu-214 in Zhukovsky, 1997In the late 1970s there
was a decision of the Council of Ministers on the establishment of new
passenger mainline aircraft. Tupolev by order directed the development of
medium-range aircraft to replace the Tu-154 [1]. In 1979, the lead designer of
the Tu-204 is approved, Leonid Selyakov. In the design of widely used computer
technology. When choosing the power plant was chosen for the foreseeable future
engine D-90 EDO Solovyov. Within two years the project has been redesigned for
this engine (originally in trimotored version). August 11, 1981 the Resolution
of the Council of Ministers on the development of medium-range passenger
aircraft trimotored. July 20, 1982 MCA and MAP approved terms of reference of
the aircraft. In the same year was presented to the customer preliminary design
and layout of the aircraft.With the Boeing 757, Boeing 767 and A300 aircraft requirements
have changed - he became a twin-engined (this time pull the D-90A was increased
to 16,000 kg). The new terms of reference were approved December 15, 1983. The
design of the aircraft were used new aluminum and titanium alloys, and
composite materials [1]. To reduce the number of joints have been used
long-length panels. Scheme is applied an improved sound insulation and new
paints. All systems are designed on the basis of new principles and with the
widespread use of digital technology. A lot of effort and attention paid to
cockpit ergonomics.In 1987 the Ulyanovsk Aircraft Plant has started production
preparation. In 1988 at the experimental production of the Antonov produced the
first prototype. January 2, 1989, he first took to the sky. The bulk of
production tests completed by December 1993. Without waiting for the end of the
test plant "Aviastar" began production. August 17, 1990 was released
the first production Tu-204. Performance tests on the aircraft were from March
to December 1993 the airline "Vnukovo Airlines." January 12, 1995
issued by Gosaviaregistr Russian Tu-204 Certificate of Airworthiness. February
23, 1996 Tu-204 made its first flight with passengers on the route Moscow -
Mineral Water.

Perspectives

TU-204 is largely out of luck. He was to become
as widespread as its predecessor, the Tu-154. Specifically for its production
was even built from scratch a new factory in Ulyanovsk. However, with the
collapse of the Soviet aircraft industry was sharply reduced funding, the
planned economy was replaced by the market, and Tu-204 first lost the
competition used cars western production, and eventually simply outdated in
many respects (in particular, the crew of the Tu-204 modifications (except SM)
consists of three people, while on most modern airliners - two people, hence
the additional cost of the pilots). At the present time is up to 10 aircraft
per year, most of which - to the Arctic Ocean, "Russia" and the Air
Force. Because of the inability of Kazan and Ulyanovsk aircraft factories to mass
production (making cost-effective operation of the aircraft) and high-quality
after-sales service system, the Tu-204 is not a special demand for commercial
air carriers, although the last modification of the SM could make a real
competition to foreign best-selling A320 and Boeing 737. At the same time, some
airlines (including very large Transaero and Red Wings) have expressed interest
in buying aircraft Tu-204. KLA and the Ministry of Industry consider the Tu-204
"turn the page" and instead of subsidizing the production of the
Tu-204 prefer to invest in other projects. 04/07/2011 in an interview with
ISNA, head of Civil Aviation Organization of Iran Reza Nahdzhavani said that
the statement of Dmitry Medvedev, the fact that Russian aircraft have technical
flaws, was an additional argument in favor of the abandonment of the country's
fleet of aircraft manufactured by KB "Tupolev" [4] .In the first
quarter of 2012 JSC "Tupolev" has in its portfolio of orders for 42
aircraft (35 options) Tu-204SM. The distribution of orders by airlines: 15 (10)
- Red Wings, 10 (12) - "Bashkortostan" ("VIM Avia"), 5 (10)
- "Aviastar-TU", 6 (-) "Aeroflot" ("Beijing Air
"), 3 (3) -" Cosmos "(RSC" Energia "), 3 (-)"
Mirny AP "(JSC" Alrosa ") [5].

Projects

Tu-204-500 - Modification based on the Tu-204-300,
designed for short routes. Currently, no aircraft has been constructed.

Tu-204P - ASW. Funding for the program was discontinued. But in 2008 the
program received a chance to survive.

Tu-206 - Tu-204 variant with a
"cryogenic" engines.

Tu-304 - a large long-haul passenger aircraft
seating capacity.

Aircraft performance

The scheme of the Tu-204 Tu-204 is
built on the aerodynamic configuration cantilever low. Swept wings of high
aspect ratio formed supercritical profiles. In order to reduce induced drag the
wing given a negative aerodynamic twist endings and set the vertical. Lift
consists of a double-slit flaps and slats along the leading edge. Chassis -
retractable, tricycle, with the nose strut. The power plant consists of two PS-90A.
The cockpit is equipped with color displays and the Y-shaped central pens with
small moves. The control system aircraft and engines - wire. According to
Chairman of the Board of Directors of "Engines" Vladimir Klimov -
Motor Sich "Colonel General AP Sitnov - the only aircraft in its class in
the world that can be planted without engines.

Operators

Since the beginning
of mass production (1990) was made 69 Tu-204 aircraft of all modifications. On
November 4, 2011 in operation 53 aircraft Tu-204.